Two observations, first it looks like those were made from files, just judging from the flats on the handles and second, it looks to me like the temper line on the larger one dips just a little bit too low twords the cutting edge in the front. I think that that there was an article in blade by Ed Fowler when he let a blade with a too low of a temper line get out of his shop, it has hunted him ever since.